Table 1.
Experimental groups | PaCO2 (mmHg) |
PaO2 (mmHg) |
Mean arterial pressure (mmHg) |
||||||
---|---|---|---|---|---|---|---|---|---|
Baseline | Hypoxia | 60 min | Baseline | Hypoxia | 60 min | Baseline | Hypoxia | 60 min | |
With AIH | |||||||||
siNT | |||||||||
Wild-type | 52.5 ± 1.5 | 52.6 ± 1.6 | 52.5 ± 1.8 | 325 ± 5a,b,f | 40.7 ± 1.0g | 296 ± 19a,f | 116 ± 9a | 75 ± 8f,g | 111 ± 8a,f |
SOD1G93A | 51.0 ± 1.8a | 52.5 ± 2.0 | 51.5 ± 1.5 | 334 ± 8a | 42.6 ± 2.2h | 325 ± 9a | 98 ± 7a | 71 ± 6h | 95 ± 7a |
siBDNF | |||||||||
Wild-type | 52.5 ± 1.6 | 51.7 ± 1.8 | 53.0 ± 1.7a | 313 ± 9a,f | 38.8 ± 0.8g | 304 ± 7a,f | 112 ± 6a,b | 65 ± 4g | 99 ± 6a |
SOD1G93A | 51.2 ± 0.6 | 50.8 ± 0.7 | 51.2 ± 0.9 | 329 ± 4a | 40.5 ± 0.6h | 316 ± 7a | 112 ± 8a | 71 ± 7h | 100 ± 8a |
siTrkB | |||||||||
Wild-type | 54.1 ± 1.7 | 54.3 ± 1.6 | 54.5 ± 1.8 | 299 ± 20a,f | 37.5 ± 1.0g | 285 ± 20a,f | 117 ± 4a | 72 ± 4f,g | 108 ± 4a |
SOD1G93A | 52.8 ± 1.5 | 52.4 ± 1.4 | 52.7 ± 1.9 | 318 ± 8a | 38.1 ± 1.4h | 290 ± 13a | 92 ± 21a,b | 67 ± 12h | 85 ± 12a |
Vehicle | |||||||||
Wild-type | 50.9 ± 1.5a | 49.7 ± 1.5d | 51.3 ± 1.5a | 292 ± 9a,f | 37.4 ± 1.3g | 267 ± 15a,f | 98 ± 6a,d | 58 ± 8g,j | 92 ± 6a,d,j |
SOD1G93A | 50.6 ± 1.8 | 50.7 ± 1.8 | 50.9 ± 2.0 | 308 ± 12a | 36.6 ± 1.2h | 293 ± 15a | 97 ± 4a,b,h | 56 ± 5h | 77 ± 5a,h,i |
UO126 | |||||||||
Wild-type | 48.8 ± 1.0d | 48.5 ± 1.3d | 49.0 ± 1.0d | 303 ± 8a,b,f | 37.1 ± 2g | 272 ± 18a,f | 99 ± 5a,b,d | 70 ± 11f,g | 84 ± 3a,d,j |
SOD1G93A | 49.9 ± 1.4 | 49.4 ± 1.5 | 49.7 ± 1.3 | 285 ± 16a,e | 39.2 ± 1.9h | 271 ± 16a,e | 97 ± 3a,b | 53 ± 5h | 78 ± 8a,h,i |
PI828 | |||||||||
Wild-type | 51.4 ± 1.2a | 49.9 ± 1.4d | 51.2 ± 1.0a | 230 ± 21a | 36.8 ± 1.3g | 220 ± 19a,g | 106 ± 4a,b | 50 ± 4g | 88 ± 3a,d |
SOD1G93A | 51.6 ± 2.0 | 51.2 ± 1.8 | 52.2 ± 2.1a | 292 ± 20a,b,f | 38.3 ± 1.5h | 256 ± 25a,e,f,h,i | 94 ± 5a,b | 54 ± 4h | 82 ± 4a |
Without AIH (TCs) | |||||||||
Wild-type | 50.0 ± 0.9 | 49.9 ± 1.0d | 50.2 ± 0.8d | 297 ± 14f | 295 ± 15 | 282 ± 17 | 105 ± 4 | 104 ± 4 | 98 ± 4c |
SOD1G93A | 49.7 ± 1.4 | 49.7 ± 1.6 | 48.8 ± 1.5a,c | 316 ± 8 | 305 ± 13 | 299 ± 10 | 112 ± 5a,b | 108 ± 5 | 95 ± 4 |
Data are for rats with AIH or without AIH. Rats received intrathecal injections of either (1) siRNAs targeting BDNF (siBDNF), TrkB (siTrkB), or nontarget (siNT) mRNA; or (2) vehicle or inhibitors for MEK/ERK (UO126) or PI3K/Akt (PI828). Significant differences within individual study groups are indicated as follows:
asignificant difference from hypoxia,
bsignificant difference from 60 min, and
csignificant difference from baseline. Significant differences across study groups are indicated as follows:
dsignificant difference from wild-type siTrkB,
esignificant difference from SOD1G93A siNT,
fsignificant difference from wild-type PI828,
gsignificant difference from wild-type without AIH,
hsignificant difference from SOD1G93A without AIH,
isignificant difference from SOD1G93A siBDNF, and
jsignificant difference from wild-type siNT. Values are expressed as means ± 1 SEM. Differences were considered significant if p < 0.05.